55215301244 has 12 divisors (see below), whose sum is σ = 96628639800. Its totient is φ = 27607118448.

The previous prime is 55215301213. The next prime is 55215301247. The reversal of 55215301244 is 44210351255.

It is a self number, because there is not a number n which added to its sum of digits gives 55215301244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55215301247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184742 + ... + 380210.

It is an arithmetic number, because the mean of its divisors is an integer number (8052386650).

Almost surely, 2^55215301244 is an apocalyptic number.

It is an amenable number.

55215301244 is a deficient number, since it is larger than the sum of its proper divisors (41413338556).

55215301244 is a wasteful number, since it uses less digits than its factorization.

55215301244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266092 (or 266090 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 55215301244 its reverse (44210351255), we get a palindrome (99425652499).

The spelling of 55215301244 in words is "fifty-five billion, two hundred fifteen million, three hundred one thousand, two hundred forty-four".